Chris Huhne is finding prison a “fascinating” experience which has rekindled his journalistic curiosity, the former Cabinet Minister Jonathan Aitken said yesterday.

Huhne, who is serving an eight-month sentence for perverting the course of justice, gave an insight into his feelings in a letter to Mr Aitken, who was jailed for seven months for perjury in 1999.

Mr Aitken, a former Tory Defence Minister, said they were members of a “rather exclusive club” of jailed former Cabinet ministers. He told BBC Radio 4’s Broadcasting House that the former Liberal Democrat Energy and Climate Change Secretary was in “good shape” but